I've never shopped at a hardware store in Bluefields where the staff was anything but genial and anxious to help. This store is near the Santa Rosa bridge on the way to the airport.
RACCS, or RACS in its shortened form, stands for Region Autonoma de la Costa Caribe Sur.
Up until a few years ago it was RAAS, which stood for Región Autónoma del Atlántico Sur. I think someone somewhere simply made a correction: Nicaragua's east coast is on the Caribbean not the Atlantic. Been that way for a very very long time.
All of this RACS stuff just refers to the southernmost of Nicaragua's two autonomous regions.